An article published in the journal “Nature” presents a study that describes two possible mega-tsunamis that shook the surface of the planet Mars more than three billion years ago. According to a team led by J. Alexis Palmero Rodriguez of the Planetary Science Institute two meteorites hit Mars a few million years from each other but with similar effects. Perhaps at that time there was an ocean of liquid water and the impacts raised waves up to 120 meters (almost 400 fett) which engulfed large areas of the mainland.
An article published in “The Astronomical Journal” describes a research on a trans-Neptunian object called 2007 OR10. A team of astronomers used NASA’s Kepler space telescope and archive data of ESA’s Herschel space telescope’s observations to study this celestial body. The result is that they discovered that it’s much bigger than it looked and is probably a dwarf planet.
Yesterday, NASA held a press conference to announce that 1,284 exoplanets have been verified among the candidates discovered using its Kepler space telescope. It’s by far the largest number of planets added to the already long list of the known ones. An article on this discovery has just been published in “The Astrophysical Journal”.
NASA’s MESSENGER mission has published the first complete topographical map of the planet Mercury. To be precise, it’s a Digital Elevation Model (DEM), a representation of the elevation distribution of territory, or of another surface, in digital format. It’s the product of the processing of data collected by the MESSENGER space probe during its mission ended just over a year ago.
The German space agency DLR published photos of a curious crater marked by a deep rift that splits it in two in the area of Mars called Memnonia Fossae. These are photos taken by the High Resolution Stereo Camera (HRSC), one of the instruments of ESA’s Mars Express space probe.